Patent GB-247982-A (GB)
Abstract: 247,982. Krippendorf Kalculator Co., (Assignees of Dudley, C. H.). Dec. 1, 1925, [Convention date]. Multiplying-apparatus.-In a machine particularly of the type described in Specification 7450/14 for calculating the area of leather required for cutting boot or shoe parts, the member which effects registration on the counting mechanism is adapted to be restored to its initial position by power-operated mechanism, the latter being rendered inoperative after the member has reached the initial position. As shown, the interconnected concentric setting discs 10 which correspond with the sizes and half-sizes of boots &c. are loosely mounted on a spindle 12, Figs. 2 and 5, and each disc has a set of equally spaced pins 20, the distance between consecutive pins being such that for any particular disc the angular movement of the disc and of those below it is proportional to the area of the shoe-part of corresponding size. The angular movement of the discs, effected by the operation of control levers 24, is conveyed by a bottom disc 28 through a friction wheel 30 to a counter 34 mounted in a carnage 36 on guides 38. To the carriage is secured both ends of a metal band 70 that passes round a segment 66 and the hub of a setting wheel 54 adapted to vary the position of the friction wheel radially to compensate for variations in the lengths, widths, and other factors. The wheel 54 has a set of graduations representing the number of square feet required to cut 100 pairs of a shoe-part of the model size. A fractional scale is provided on a plate 92, Figs. 5 and 6, connected by a metal band 96 to a plate 94 having a spring-pressed plunger 104 adapted to engage a hole 102 in the edge of the, wheel 54 so as to couple the plate 92 thereto. The plate 92 is set by an arm 106 having a plunger 108 adapted to engage holes in a segment 110 secured to a plate 88 pivoted on the pin 56. To secure a different Betting of the wheel for different widths a cam groove 118, Fig. 8, in the lower face of the wheel 54 engages a pin 116 rigidly connected to a block 114 slidable, in a slot 112 in a frame member 62, Fig. 7. A spring-pressed plunger 126 adapted to be set to the width required positions a radially slotted plate 120 relatively to the plate 88 so as to shift the wheel 54. In accordance with the invention the means for restoring the discs and rewinding the spring 26 comprises a friction wheel 146, Figs. 10 and 12, on a vertical spindle 144 driven by worm gearing and belt drive from a motor 138. The spindle 144 is supported in a standard 136 pivotally mounted on a shaft 133 so as to rock the friction wheel into and out of engagement with the rim 150 of the lowermost wheel 10. The standard slides in a housing 148 against the action of a spring 176 and the wheel is normally held inoperative by a latch 154 which can be freed by the depression of a finger lever on a shaft 168. The rocking of the shaft through an arm 166 raises a dog 162 so as to rock the latch 154 about pivot 156. Further movement of the dog by reason of the engagement of the upper end with a roller 172 frees the end of the latch from the notch 160 in the dog, but the parts are returned to engaging position, on the return of the standard 136, by a double spring-controlled hook 182. The automatic disengagement of the friction wheel 146 is effected by permitting an overthrow of the lowest disc 10, during which movement a roller 202 on an arm 204 pivoted at 200 enters the cammed portion 206 of a slot in the rim of the next higher disc so as to project a pin 205 into contact with a plate 208 on the standard and to push it back into latched position. The overthrow is effected by mounting the pin 18 of the second disc, that contacts with the upper pin of the lowest disc, on a plate 188 controlled by oppositely disposed springs 190, 192 and provided with a flange 194 normally engaging a spoke 196 of the disc but free to move to the spoke 198.